"Changing Japanese and American emissions regulations forced Porsche to withdraw the 930 from those markets in 1980. Believing the 928 would eventually replace the 911, Porsche cut back spending on the 930, and it was not until Fuhrmannís resignation that the company finally committed the financing to meet US and Japanese regulations.

The 930 remained available in Europe, and for 1983 a 325 hp performance option was available on a build-to-order basis from Porsche. The add-on included a 4-pipe exhaust system and an additional oil-cooler requiring a remodeled front spoiler. Units bearing the add-on featured additional ventilation holes in the rear fenders and modified rockers.

The mighty 930 returned to America in 1986, and ran through the end of 930 series production in 1989."